公开(公告)号：US08543288B2

公开(公告)日：2013-09-24

申请号：US13139302

申请日：2008-12-12

申请人： Per-Åke Bligård ,  Vinka Miketa ,  Göran Olsson

发明人： Per-Åke Bligård ,  Vinka Miketa ,  Göran Olsson

IPC分类号： G01M17/00

CPC分类号： F02D9/06 ,  F02D41/0007 ,  F02D41/1448 ,  F02D41/221 ,  F02D41/222 ,  F02D2200/0406 ,  Y02T10/40

摘要： A diagnostic method for an exhaust pressure regulator provided in an exhaust system connected to a turbocharged internal combustion engine includes demanding engine brake, measuring a back pressure in the exhaust system by a back pressure sensor provided between the exhaust pressure regulator and a turbo unit when demanding engine brake, measuring the boost pressure by a boost pressure sensor provided in the inlet manifold when demanding engine brake, comparing the measured back pressure and the measured boost pressure with stored back pressure and boost pressure values in order to determine whether there is a defective pressure regulator or a defective backpressure sensor. A diagnostic apparatus for an exhaust pressure regulator provided in an exhaust system connected to a turbocharged internal combustion engine is also provided.

摘要翻译： 设置在连接到涡轮增压内燃机的排气系统中的排气压力调节器的诊断方法包括要求严格的发动机制动器，当排气压力调节器和涡轮机组之间设置的背压传感器要求时，测量排气系统中的背压 发动机制动器，当要求发动机制动时，通过设置在入口歧管中的增压压力传感器来测量增压压力，将所测量的背压与测量的增压压力与存储的背压和增压压力值进行比较，以确定是否存在缺陷压力 调节器或有缺陷的背压传感器。 还提供了一种设置在与涡轮增压内燃机连接的排气系统中的排气压力调节器的诊断装置。

公开(公告)号：US20110313615A1

公开(公告)日：2011-12-22

申请号：US13139302

申请日：2008-12-12

申请人： Per-Äke Bligärd ,  Vinka Miketa ,  Göran Olsson

发明人： Per-Äke Bligärd ,  Vinka Miketa ,  Göran Olsson

IPC分类号： G01M15/09

CPC分类号： F02D9/06 ,  F02D41/0007 ,  F02D41/1448 ,  F02D41/221 ,  F02D41/222 ,  F02D2200/0406 ,  Y02T10/40

摘要： A diagnostic method for an exhaust pressure regulator provided in an exhaust system connected to a turbocharged internal combustion engine includes demanding engine brake, measuring a back pressure in the exhaust system by a back pressure sensor provided between the exhaust pressure regulator and a turbo unit when demanding engine brake, measuring the boost pressure by a boost pressure sensor provided in the inlet manifold when demanding engine brake, comparing the measured back pressure and the measured boost pressure with stored back pressure and boost pressure values in order to determine whether there is a defective pressure regulator or a defective backpressure sensor. A diagnostic apparatus for an exhaust pressure regulator provided in an exhaust system connected to a turbocharged internal combustion engine is also provided.

摘要翻译： 设置在连接到涡轮增压内燃机的排气系统中的排气压力调节器的诊断方法包括要求严格的发动机制动器，当排气压力调节器和涡轮机组之间设置的背压传感器要求时，测量排气系统中的背压 发动机制动器，当要求发动机制动时，通过设置在入口歧管中的增压压力传感器来测量增压压力，将所测量的背压与测量的增压压力与存储的背压和增压压力值进行比较，以确定是否存在缺陷压力 调节器或有缺陷的背压传感器。 还提供了一种设置在与涡轮增压内燃机连接的排气系统中的排气压力调节器的诊断装置。